Sharp-shinned Hawk (?) Watching Me

As I was photographing a Little Blue Heron early in the morning at Ding Darling NWR, I heard a noise behind me. I turned around and saw this hawk that landed on a branch close by and was watching me. I was using a 300mm lens with a 1.4X teleconverter, so I had to back up to be able to focus on the hawk because it was too close. I was only able to get a few shots before it flew off. But it was fun to see it close by. I believe it is a Sharp-shinned Hawk, but not positive. I always had trouble ID’ing hawks.

My subject I was working on early in the morning, in the shade. A Little Blue Heron in bushes, 1/50 sec handheld, f/8, ISO 800, 300mm w/ 1.4X teleconverter, handheld.